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How To Maintain Generator Fuel

Generator fuel maintenance is required to stable your new generator performance. When the fuel goes bad, there is also trouble in running the generator. That’s why it is important to learn how to maintain your generator fuel safely. It is not tough to do this, there are some easy steps that you can follow to ensure the reliability of your fuel supply.

Backup generators provide a reliable source of power for home and industrial use when the regular supply of electricity is interrupted. A diesel generator can give the power needed to keep normal operating equipment close to normal, still if an outage continues for many days.

A fuel generator will work properly as long as there is an amount of gas or diesel fuel depending on the type of generator. A system can only be shielded from the adverse effects of a power outage if they have a backup generator and an on-site supply of clean fuel that will provide power to the generator during the outage.

Apart from generators, the fuel of the generator also requires maintenance. You can put diesel in the fuel tank for a year without any special attention. But, it demands some care.

Most types of diesel fuel are decline over time. A generator working on disagreeable fuel gives rise to notable problems. Finally, it can stop working, leaving you without backup power at the moment you need it the most. To maintain the life of your generator, do regular maintenance and clean the fuel regularly.

Symptoms of Fuel Degradation

Degraded fuel can cause numerous problems for your power generator.

  • Signs of fuel degradation include dark color,
  • Hazard, mud build down or in the sides, Gelling
  • Smoky exhaust, foul smell,
  • Fuel injector and poor engine performance.

Main Source Of Fuel Degradation


Diesel fuel freezes at a much higher temperature than most other fuels. A standard diesel can freeze at any temperature below 32 F.


There is a danger from water in the fuel, germs are produced in the fuel. Which destroys the fuel condition. That’s why the fuel should be protected from water.

Past Shelf Life

Like many products, diesel fuel has a set shelf life and can start to deteriorate after six months. After two years of inactivity, diesel fuel may become useless due to degradation. A  Fuel degeneration can influence other features of your generator, including flash and cloud points, distillation, and can discredit engine performance.

Do To Reduce Fuel Degradation

Maintaining & Sampling Diesel Fuel

Fuel is produced by taking a sample of fuel to determine whether the fuel is right for our generator engine. The fuel is tested to determine whether it is stable to handle the full load. Depending on the results, other methods can be used to troubleshoot any problem. There are numerous tests that can be performed on diesel fuel.

Fuel Filtering

It is a method that separates water and other contaminants from fuel. The fuel filter system filters contaminants from your fuel tank and also cleans out the water. There is no need to waste the entire fuel with the help of a filter system.

Fuel Polishing

Fuel polishing consists of three major steps, designed to ensure you completely that your fuel is free of any bacteria and fungi. Fuel polishing helps to stop a large chance of diesel engine and failure as it removes microbial growth. You should include fuel polishing in your annual planned maintenance program. They are available in different sizes ranging from 8 liters per minute up to about 600 liters per minute.

In addition to the size of the machine, the level of contamination within the fuel determines how long it takes to thoroughly complete the task. After the fuel polishing process is complete, you must treat the fuel properly.

Fuel Storage

Do not use poly drums for fuel storage, use steel drums. Fuel storage should be in a cooled surface area aside from heat. Over time, the fuel will react with plastic (a hydrocarbon) and slowly nourish the drum fuel.

Remember that heat from the sun will accelerate the oxidative process in stored fuel. And the temperature will cause condensation for the formation of swings, resulting in the accumulation of water in the tank bottles. First, you have to avoid fuel storing in the underground area. If you are caught storing underground fuel, the penalty is harder, the higher the penalty. They are inexpensive and durable. But if your fuel supply needs are very good, you will need them very much.


In this blog, we are sharing some tips on how to maintain generator fuel. I hope with the help of this blog, you can easily maintain fuel. If you want more information related to new and used generators? You can contact our EO Energy team and you can find out all the questions.

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